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Prove the following version of the pigeonhole principle. Let $m$ and $n$ be positive integers. If $m$ objects are distributed in some way among $n$ containers, then at least one container must hold at least $1 + \left\lfloor\frac {m − 1}{n}\right\rfloor$ objects.

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HINT: Suppose that each container holds at most $\left\lfloor\dfrac{m-1}n\right\rfloor$ objects. Then it’s certainly true that each container holds at most $\dfrac{m-1}n$ objects. (Why?) What does that tell you about the maximum possible total number of objects in all $n$ containers?